07/28/2010 12:00 pm ET Updated Dec 06, 2017

Kristen Schaal Kills In Letterman Debut (VIDEO)

World, meet Kristen Schaal. She's hilarious and despite the fact that her filmography only adds up to ten minutes of screen time, you know she'll be around a while.

The "Flight Of The Conchords" scene-stealer made her debut last night on Letterman and absolutely killed. It's always a good sign when you have Dave cracking up the whole time.